Marvin Serviss, of Thousand Oaks, turns 100

Contributed photo
Marvin Serviss (right) poses with great-grandchildren Toby Serviss (from left), Aiden Serviss, Jordan Serviss and Jessica Serviss on May 18 at a party to celebrate his 100th birthday at The Reserve in Thousand Oaks.

Looking back on the past 100 years of his life, including a military stint in World War II and a marriage of 72 years, Marvin Serviss couldn't pinpoint the reason for his longevity.